K'NEX Mario Kart Wii Building Set: Luigi's Motorized Sprinter Kart Bring the world of Mario Kart Wii to life with super fast battery-powered motorized action! Build Luigi's Sprinter Kart, complete with a real working battery-powered motor (requires 2 AAA batteries, not included) Buildable Luigi figure, plus a bonus collectible Blooper item, just like in the game Includes 26 colorful durable plastic K'NEX pieces and step-by-step instructions Recommended for builders ages 6 and up